'Main Code:
Public Class Form1
Dim mPosX As Integer
Dim mPosY As Integer
Private Sub SizeW_Tick(sender As System.Object, e As System.EventArgs) Handles SizeW.Tick
If Not ((Me.MinimumSize = Me.Size And ((MousePosition.X - mPosX) + Me.Width > Me.Width)) Or (Me.MinimumSize <> Me.Size)) Then
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In VB6 we had a code inside textBox_MouseUp to call textBox_KeyUp(-1, 0) and the signature of KeyUp was
Private Sub textBox_KeyUp(ByRef KeyCode As Short, ByRef Shift As Short) Handles textBox.KeyUp
Now when I migrate to .NET I changed the KeyUp event to Private Sub textBox_KeyUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles textBox.KeyUp
How can I do this call textBox_KeyUp(-1,0) now from textBox_MouseUp event?
the title pretty much sums up the problem: the existing HScrollBar control does not expose a MouseUp event. How do I go about adding this event to the control? I'm using VS2005.
View 8 RepliesI'm trying to execute different code depending on the button clicked (button 4 or 5) on Form1, but when I click on button5 to activitae the code on the Form2's Load event everything is Ok, but when I click the back button to return to Form 1 and click on the Button4 to activate the code on the Form2's Load event again, it doesn't active the Form's Load event, is there a way to form the form load event every time I access it from Form1? [code]
View 7 Repliesit is possible to force the timer to do the code within the tick event before the delay.In other words..Usually the timer when starts it delays 'x' seconds according to the interval settings then process some codes then delay again 'x' seconds.What I want here is to do the code then delays 'x' seconds.
View 2 RepliesI am having a problem with data in a combobox not being refreshed (using VB.net 2005 by the way). Right now I have a windows application with several forms. I have a Template form that contains the cboActivity combobox. This combobox is filled with data from a SQL database. I also have an Activity form. This form allows me to enter new activity information and save it to the database. If I load up the Template form, click the cboActivity combobox, the Fill event is triggered and my combobox is filled with the activity data from the database. But if I leave this form open, go to the Template, add new activity information, and save it...when I go back to the Activity form the combobox has not been update to contain the newly added data. Is there a way I can force the Fill event to fire every time I click the combobox?
View 3 RepliesUsing the walkthrough from [URL], I implemented a DatagridView in virtual mode, totally unbound, in VB 10 Express (we are talking WinForms).
I understand that CommitEdit (DataGridViewDataErrorContexts.Commit) commits the current cell's contents to the data cache.
The example uses row-level commit, i.e. it pushes the values into a row buffer until the current row is left. Only then the row is added to (or updated in) the data store. That's exactly what I do, too.
Question -- how can I commit the current row programmatically without leaving it? (I want to commit the whole row, not just the current cell.)
If the user leaves the row, there is a RowValidating, RowValidated, RowEnter event sequence where the datastore update is taken care of. So one idea (currently my only one) was to simply re-set CurrentCell to Nothing, for example.
But I cannot just set the DataGridView's CurrentCell property to Nothing (or any cell outside of the current row) since I want to commit from within an event handler of a custom edit control created by a custom column, and I see an System.InvalidOperationException exception when setting CurrentCell there.
In fact, it is a tiny button right to a combo box, i.e. I create a DataGridViewComboBoxCell descendant which is a DataGridViewComboBoxColumn descendant's edit control. My special ComboBox cell adds a tiny button which should commit the current row. Unfortunately, that button's _Click event handler cannot change CurrentCell since DetachEditingControl throws the exception then.
Obviously, I must delay the CurrentCell re-assignment until the whole _Click event has been processed. Or what? How would I do that -- register a custom Windows message, SendMessage that one to me, and override the windows procedure of the form so it re-sets CurrentCell when this message is received? (Hello?)
There should be a rather easy way to let DataGridView commit all changes by firing the events that I handle to perform the datastore update, no?
I'm using the MouseDown to create objects, they are used within MouseMove and they are killed within MouseUp Event. Now I want to use the Doubleclick Event to build in some shortcuts. My problem is that the MouseUp routine is called sometimes before the DoubleClick routine. I do need the MouseDown Event before starting the DoubleClick code, however sometimes the MouseUp event is triggered which is killing the needed objects.
Is it possible to get the DoubleClick-event routine always without the MouseUp routine?
I sometime use a 'catch-all' procedure for an event for all textboxes, such as:[code]Is there a way of finding out which textbox I am in?
View 2 RepliesIs there anyway to detect on Mouseup when column is being resized not cell clicked?
View 5 Repliesis it possible to draw an accurate circle in vb.net with mouseDown and mouseUp boundaries? I only manage to create circle-settings with rectangular boundaries using DrawEllipse. I've tried to work around it using pythagoras but it just doesn't work and I'm pretty sure I've got my maths right...
Is it possible to define a circle with DrawEllipse(pencil,x1,y1,width,length) ?
I'm working with a project that is WPF and VB.net. I want to visually simulate "dragging" an object (though I do not want to use standard drag and drop for reason of purpose).Basically, I have a label object that, on its MouseDown event, I want it to follow the mouse cursor inside a 640x480 solid-size grid (but not outside of it!). Mind you, this grid is centered inside a full-screen window. Again, the object should not follow the mouse outside of the grid (I'm guessing a "ClipToBounds = True" here)Then, on the label's MouseUp event, I want it to either stay in its current position or return to its original position, as determined by the value of a boolean variable set by another object's MouseEnter property.Note, if it would be easier to work with, I can change the grid to a canvas in a cinch. I'm guessing that would be desirable.
How do I make the object (label) follow the mouse cursor inside the grid/canvas, but not outside of it? This needs to happen on the MouseDown event of the label.How do I make the object "stick" in its current position? (From this, I can probably figure out how to make it return to its original position on my own.
if i'm creating the listview using the new listview instead of actually putting a listview on the form directly. how do i access the listview.click and mouseup.click etc..since there's no lstview until the program loads?
View 4 Replies[Code]...
a messagebox appear that show user-defined type not defined i had try another code but it still same error.. i'm using vb6
I've read thru Iceplug's tutorial on control arrays and got it working. I tried to add a new event by basically copying his click event code and calling it a doubleclick event. I used the proper addhandler and assigned the correct name to my sub. I have the click event changing the background color to blue and the doubleclick event changing the background color to green. The background color does not change to green. Why?
Heres the tutorial with my new code encased in asterisks ...
Code:
Imports System
Imports System.Windows.Forms
Public Class form1
[CODE]...
I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.
View 2 RepliesI'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).
I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?
I want to add a parameter to my function but it is not force. Example : Public Function fct(Byval str as string,byval bol as boolean) End Function I want to when i call function, i can pass value for bol or not. it still ok. How can i do that.
View 2 RepliesI've got a handful of dynamic controls populating an ASP page, with VB.NET in the back-end.What I need is when the user changes the .TEXT value of a textbox and the page posts back, the .TEXT value of a Table Cell changes to reflect that change (it multiplies the value of the textbox by the value of another cell).But a Table Cell can't be set to AutoPostBack, and I can't for the life of me figure out how to programmatically refresh the page (force a postback) in the TextChanged event for the textbox.
View 1 RepliesI am simply searching how to obtain errors/warning for each function/member that isnt documented. Im pretty sure I managed to do this on one of my projects, but cant find how to do it here on my workstation. I have looked into the project props, the solution props, but cant find it. I must have missed something, or maybe I could do this at home with an extension.
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I currently have this which I thought would work fine but doesnt any ideas how to force 2 lines in messagebox?
Dim Message As String = "LOAD PART FILE - YES" & VBCRLF "LOAD PROBE FILE - NO"
Dim Caption As String = "LOAD FILE"
Dim Buttons As MessageBoxButtons = MessageBoxButtons.YesNoCancel
Dim Result As DialogResult
Result = MessageBox.Show(Message, Caption, Buttons, MessageBoxIcon.Question)
So, my application has multiple text boxes for entering different numbers. Only numbers..
One problem I've run into is that I get an error when a textbox is totally empty. If I throw at least a zero in there, it works fine.
How would I make a textbox display "0" when someone deletes everything in the text box? I don't want it to be empty, I just want it to show zero.
I have written an application for a customer, and the application is run in various locations around the world. The company carefully controls the release of the software to the various buildings where it is being used, and because of this, I have made use of the "Check for updates" feature. The problem I am faced with, is that the folks using this software more often than not answers "NO" when prompted to download and install the latest version of the application. This is unacceptable and ultimately, we'll need to go in and have them manually install the software.
We don't publish updates to the software w/o meaning for them to be necessary, and I find it hard to believe that Microsoft doesn't recognize this sort of thing as being needed when they designed the update procedures. Alas, this seems to be the case.
I'm having an application which has to perform exporting and importing data. At the moment he runs those functions, I want a form to popup with an animated gif, so my client sees that the application is still running.But the animated gif stops sometimes, because he is busy doing stuff (like copying files, etc...)Is there a way to tell the form to refresh automatically every 0.1 sec, so the image runs fluidly. I tried to put a timer in my form, and start the timer as from the form is shown...the timer_tick says he has to refresh, but he doesn't want to do that.
View 7 RepliesSo I made a program that is like a taskbar. (taskbar = Menustrip)
on runtime it gets all the apps and add there name and icon to the taskbar and when u click it I want to force it to restore itself so its no longer minimized.
For the click its probally something with CType, and I don't know much about the CType :(
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I am having a bit of trouble converting a single stored in a string as four hex values. I believe my problem stems from some Unicode hex values not matching the corresponding ASCII hex value above 0x7F (127). For example, I have the following single stored in a string; "518.42" or 0x44019AE1. The char that would contain 0x9A if the data type were ASCII contains U+0161 which will not convert properly to a byte array. My question is: Is there any way to force a string to be of ASCII rather than Unicode? Or maybe there are other recommendations? For reference I have tried both of the following. The first throws a format exception and the second converts to the wrong single.
Private Function ConvertHexToSingle(ByVal hexValue As String) As Single
Try
Dim iInputIndex As Integer = 0
Dim iOutputIndex As Integer = 0
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I have a DataGridView which I AllowUserToAddRows behavior enabled. I want to be able to force that only one row be added at time, then if the user clicks the save button the row is inserted into the database, and then another row may be added if the insert was successful.
The reason I want to do this is to get the last inserted id and insert that information into another table.
I ran into a little problem where my thread(s) tries to access a control that may not be created yet. How can I check for this or is there a way to force the creation of the control(s) first and then go on or any other solution?
View 23 RepliesI'm printing a multi page document with PrintDocument() and I need to be able to force a page break from within my code. I've tried adding vbFormFeed at the appropriate spot but it's ignored.
Is there any way to embed something into my page buffer so that it will force a page break?
We are building postcards and I need the image to be on the second page, so the printer will do duplex printing and we'll have image on one side and text on the other
Imports System.Drawing
Imports System.Drawing.Printing
Public Class trial : Inherits Printing.PrintDocument
Dim text As String
Dim font As Font
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